Seiko Cal. 3857 - 850

This Spring Drive model from 1969 features a 46mm Titanium case. It features a Black dial protected by a Sapphire crystal and offers 50m of water resistance. [seikata-wm-01d27817c1b6]

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

46mm

Case Thickness

13.0mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

50m

Dial Color

Black

Jewels

19j

Frequency

36,000 bph

Power Reserve

63 hours

Year

1969

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